Strip Sri Lanka of Commonwealth chairmanship, Ed Miliband urges
Call comes as David Cameron heads to Colombo for summit overshadowed by host country's alleged human rights abuses
David Cameron arrives in Delhi. He will later travel to Sri Lanka to attend the Commonwealth heads of government meeting. Photograph: Stefan Rousseau/PA
Labour has called for Sri Lanka's president to be stripped of his chairmanship of the Commonwealth as David Cameron heads to Colombo for a summit overshadowed by the host country's allegedhuman rights abuses.